The Equator, at a glance
0° latitude, 40,075 km long, crossing three continents and thirteen countries
3 continents
South America, Africa, and Asia, plus three oceans.
13 countries
Sit directly on the equator, including Ecuador, Kenya, and Indonesia.
Lake Victoria
The only major East African lake the equator passes directly through.
~5,790 m
Volcán Cayambe’s height, the equator’s only point with a permanent glacier.
Where Does the Equator Run, and Through Which Countries?
Which continents and countries does the line actually cross?
- The equator is an imaginary line at 0° latitude, exactly midway between the North and South Poles. It divides Earth into the Northern and Southern Hemispheres.
- It crosses three continents: South America, Africa, and Asia.
- Thirteen countries sit directly on the equator, including Ecuador, Colombia, and Brazil in South America; Gabon, the Republic of the Congo, the Democratic Republic of the Congo, Uganda, Kenya, and Somalia in Africa; and Indonesia in Asia. It also skirts São Tomé and Príncipe.
- Ecuador, the country, is named directly after the equator. The word “ecuador” is Spanish for “equator.”
Q1. True or False: The equator crosses three continents: South America, Africa, and Asia.
Q2. True or False: The country Ecuador is named after the equator; “ecuador” is Spanish for “equator.”
What Oceans, Lakes, and Climate Does the Equator Cross?
Which East African lake does the line actually pass through?
- The equator crosses three oceans: the Atlantic, the Indian, and the Pacific.
- It also passes directly through Lake Victoria, in East Africa. Not every major East African lake sits on the line, though: Lake Tanganyika, further south, lies entirely south of the equator.
- Earth isn’t a perfect sphere. Its rotation makes it bulge slightly at the equator, so the planet’s diameter there is a little wider than pole-to-pole.
- Countries on the equator generally have a tropical, equatorial climate. Day length stays close to 12 hours year-round, with little seasonal variation.
- These regions typically see high rainfall, often between 2,500 and 3,500 mm a year, and average daytime temperatures around 30°C. The Amazon Rainforest is the best-known example of this equatorial climate at work.
- Volcán Cayambe, a peak in the Andes, in Ecuador, is the only point on the equator with a permanent glacier. At nearly 5,790 metres, it stays cold enough to hold snow year-round, despite sitting on the tropical line.
Q3. True or False: Lake Tanganyika is one of the East African lakes the equator passes directly through.
Q4. True or False: Volcán Cayambe in Ecuador is the equator’s only point with a permanent glacier.
Think it through, before reading on. Volcán Cayambe sits almost exactly on the equator, in the tropics, yet it holds a permanent glacier. Why doesn’t its location near 0° latitude keep it too warm for year-round snow?
Show the explanation
Temperature falls steadily with altitude, regardless of latitude, and Cayambe’s summit sits at nearly 5,790 metres, high enough that the air stays below freezing year-round. Its equatorial location controls day length and seasonal consistency, not the cold needed to sustain a glacier; that cold comes entirely from its extreme elevation.
Why Do Monuments and Rockets Cluster on the Equator?
Why do rockets launch from near the equator?
- Several countries have built monuments marking where the equator crosses their territory. The best known is Mitad del Mundo, near Quito, Ecuador, built where a French expedition calculated the line in 1736.
- Modern GPS measurements later found the true equator lies about 240 metres north of that monument. Ecuador built a second, more accurate marker nearby.
- Kenya has a similar roadside marker near Nanyuki, a popular stop for travellers on the route north from Nairobi.
- Earth spins fastest at the equator, at roughly 1,670 km/h, since a point there covers the planet’s full circumference once every 24 hours.
- A rocket launched eastward near the equator gets a free speed boost from that rotation, needing less fuel to reach orbital velocity.
- The European Space Agency’s Guiana Space Centre, in French Guiana, sits close to the equator specifically to take advantage of this.
Q5. True or False: Modern GPS measurements found the true equator lies about 240 metres away from the original Mitad del Mundo monument.
Q6. True or False: Rockets launched near the equator need more fuel to reach orbital velocity than rockets launched near the poles.
Remember the trap. Not every East African lake sits on the equator. Lake Victoria does; Lake Tanganyika, further south, does not.
Quick Q&A
Which three continents does the equator cross?
South America, Africa, and Asia.
Which major East African lake sits directly on the equator?
Lake Victoria; Lake Tanganyika, further south, does not.
Why does Volcán Cayambe have a permanent glacier despite sitting on the equator?
Its summit, at nearly 5,790 metres, stays cold enough year-round due to its extreme altitude.
Why do rockets launch from near the equator?
Earth spins fastest there, giving eastward launches a free speed boost toward orbital velocity.
- UPSC CSP 2025 — A water-bodies question listed Lake Tanganyika, Lake Tonlé Sap, and Patos Lagoon, and asked how many the equator passes through. The correct answer is none; all three lie well away from the equatorial line. View this question →
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